Process Control and Instrumentation MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Process Control and Instrumentation, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Process Control and Instrumentation MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Process Control and Instrumentation mcq questions that explore various aspects of Process Control and Instrumentation problems. Each MCQ is crafted to challenge your understanding of Process Control and Instrumentation principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Process Control and Instrumentation MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Process Control and Instrumentation. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Process Control and Instrumentation knowledge to the test? Let's get started with our carefully curated MCQs!

Process Control and Instrumentation MCQs | Page 28 of 35

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Q271.
The level of a liquid under pressure can be determined using

a.

bubbler system

b.

differential pressure manometer

c.

diaphragm box system

d.

air-trap system

Discuss
Answer: (b).differential pressure manometer
Q272.
Temperature measurement range of iron-constantan thermocouple is 0 to 870°C. It can be used to measure sub zero temperature, because at lower temperature

a.

emf produced is very low of the order of microvolt.

b.

embrittlement of iron occurs.

c.

rusting of iron takes place.

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
Q273.
Which of the following is never used as an element of industrial resistance thermometer ?

a.

Lead

b.

Nickel

c.

Copper

d.

30% iron + 70% nickel

Discuss
Answer: (a).Lead
Q274.
Which of the following shows maximum dip effect (indicating reverse direction of temperature change) ?

a.

Mercury thermometer

b.

Radiation pyrometer

c.

Bimetallic thermometer

d.

Thermocouple

Discuss
Answer: (a).Mercury thermometer
Q275.
A stable system is the one

a.

for which the output response is bounded for all bounded input.

b.

which exhibits an unbounded response to a bounded input

c.

which satisfies the conditions for a servo problem.

d.

none of these.

Discuss
Answer: (a).for which the output response is bounded for all bounded input.
Q276.
Sub-zero temperature (< 0°C) can be measured by a constant volume gas thermometer employing

a.

helium

b.

nitrogen

c.

hydrogen

d.

none of these

Discuss
Answer: (a).helium
Q277.
__________ is an example of distributed parameter system

a.

Tubular reactor

b.

CSTR

c.

On-off controller

d.

none of these

Discuss
Answer: (a).Tubular reactor
Q278.
Which of the following is not classified as a thermo electric pyrometer ?

a.

Resistance thermometer.

b.

Thermocouple.

c.

Optical pyrometer (disappearing filament type)

d.

Radiation pyrometer

Discuss
Answer: (c).Optical pyrometer (disappearing filament type)
Q279.
Maximum differential pressure in liquid manometer is __________ psi.

a.

20

b.

30

c.

40

d.

50

Discuss
Answer: (b).30
Q280.
Phase margin is equal to

a.

180° - phase lag

b.

phase lag - 180°

c.

phase lag + 180°

d.

phase lag + 90°

Discuss
Answer: (a).180° - phase lag
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